Ground Resistance Meters
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Xuanhemen Digital Oscilloscope DIY Handheld Mini Oscillograph Making Kit Open Source Welding Protection Case
4.4 out of 5 stars with 130 reviews
Features: With automatic, conventional and single trigger mode, it is easy to capture the instantaneous waveform.It can be triggered by rising or falling edge.Trigger level position adjustable, with instruction.Can observe waveform (negative delay) prior to triggering.Can freeze waveform display (HOLD function) at any time.Bring 1KHz /3.3V square wave test signal source.With waveform parameter digital display, the parameters that can be displayed are: frequency, period, pulse width, duty ratio,
Xuanhemen 1500W DC-DC Step-up Boost Converter 10-60V to 12-97V 30A Constant Current Power Supply Module LED Driver Voltage Power Borad
4.4 out of 5 stars with 110 reviews
Description:The power supply module uses double sendust magnets winded with 1.2mm copper wires.Support reverse input protection with MOS so there is no worry about wrong input wire and burn out power supply.Low voltage protection will protect module and battery against damage from over-discharge when use a storage battery as input.Power converter module input voltage range is DC 10-60V, continuously adjustable output voltage range is DC 12-97V, max output current is 22A, more than 15A please